超级表达式必须为null或函数，而不是数字。升级Expo SDK 26

Question

我遇到了将React Native App从Expo sdk 21升级到Expo sdk 26的问题。

我已按照以下步骤操作：

1）在app.json中，将sdkVersion更改为＆＃34; 26.0.0＆＃34; 2）在package.json中，更改这些依赖项：

• 本地反应＆＃34; https://github.com/expo/react-native/archive/sdk-26.0.0.tar.gz＆＃34;
• expo to＆＃34; ^ 26.0.0＆＃34;
• 对（＆＃34; 16.3.0-alpha.1＆＃34; - 此确切版本）做出反应
• 反应导航到＆＃34; 1.5.8＆＃34;

以前，我正在使用：

• expo ^ 21.0.2
• react-navigation ^ 1.0.0-beta.21＆＃34;
• 反应＆＃34;：＆＃34; ^ 16.0.0-alpha.12＆＃34;，
• react-native＆＃34;：＆＃34; ^ 0.48.4＆＃34;

现在我得到这个错误，我不知道从哪里开始搜索或调试..任何想法？

这是完整的依赖项：

 "dependencies": {
    "@expo/vector-icons": "^5.2.0",
    "expo": "^21.0.2",
    "install": "^0.10.1",
    "moment": "^2.19.1",
    "moment-timezone": "^0.5.14",
    "native-base": "^2.3.2",
    "npm": "^5.4.2",
    "prop-types": "^15.6.0",
    "react": "^16.0.0-alpha.12",
    "react-native": "^0.48.4",
    "react-native-communications": "^2.2.1",
    "react-native-directed-scrollview": "^1.3.0",
    "react-native-inputs": "^0.2.1",
    "react-native-keyboard-aware-scroll-view": "^0.4.1",
    "react-native-lazyload-components": "^1.0.1",
    "react-native-maps": "^0.16.4",
    "react-native-material-design-searchbar": "^1.1.7",
    "react-native-material-dropdown": "^0.6.0",
    "react-native-material-textfield": "^0.10.2",
    "react-native-rest-client": "^0.1.1",
    "react-native-root-toast": "^2.2.0",
    "react-native-snackbar-component": "^1.0.8",
    "react-native-textinput-effects": "^0.4.1",
    "react-navigation": "^1.0.0-beta.21",
    "react-navigation-redux-debouncer": "^0.0.2",
    "react-redux": "^5.0.6",
    "redux": "^3.7.2",
    "redux-logger": "^3.0.6",
    "redux-thunk": "^2.2.0"
  }

关于我如何获得线路，图书馆或其他导致此冲突的想法？

亲切的问候

Answer 1

嗯，错误有点难以调试，但问题是我的代码中存在循环依赖。

"Super expression must either be null or a function.."消息是一种ES6 babel方式，告诉您导入/循环依赖项中存在错误。

因此，在解决了很多工作要做之后，正如@Michael Cheng所说，很多图书馆都在破坏SDK21和SDK26之间的变化。